Can't select layers in after effect composition

[Awa0101]

Hi !

A weird thing happenned to me. I was working on a project in after effect for a week and suddenly when I use the select tool, It won't be able to select layers. It's like they are grouped. 

But all the layers are shown in the bottom left, and if I click in one of them I don't see the select one in the composition display.

Need your help please

[Awa0101 · Accepted solution]

https://drive.google.com/file/d/1oyhz6XiS4smnVLGTbgzOHeZe40oYpX6n/view?usp=sharing